Actually rpm never sets the verify bits for %doc files, mainly because the %verify() attribute
does not scope properly across %doc files.
Even if the behavior were fixed in rpm this very moment, there are zillions
of packages with %doc files with no %verifyflags, so you are likely going to
have to change deltarpm's behavior no matter what.

Not fixed in rpm in Rawhide. Jeff, I appreciate the fix in 4.4.9, but,
unfortunately, we've got 4.4.2 in F7 and 4.4.2.1 in Rawhide. Paul, do you mind
fixing this in 4.4.2.1 as we're pushing to publish deltarpms in F8.